Home / 20,912,256,207.30-31,368,384,310.95-13,172,585,679.30

Finding the Fourth Proportional to 20,912,256,207.30, 31,368,384,310.95 and 13,172,585,679.30

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Solution

The fourth proportional to 20,912,256,207.30, 31,368,384,310.95 and 13,172,585,679.30 is: 19,758,878,518.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912,256,207.30 : 31,368,384,310.95 = 13,172,585,679.30 : x
  2. Step 2: Convert to fraction form
    20,912,256,207.30/31,368,384,310.95 = 13,172,585,679.30/x
  3. Step 3: Cross multiply
    20,912,256,207.30x = 31,368,384,310.95 × 13,172,585,679.30
  4. Step 4: Simplify right side
    20,912,256,207.30x = 413,202,729,957,198,725,120
  5. Step 5: Solve for x
    x = 413,202,729,957,198,725,120/20,912,256,207.30
  6. Step 6: Final answer
    x = 19,758,878,518.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.